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matti_anttila · 27th September 2007, 08:09

Quote: (Originally Posted by cstmwrks)

Has anyone out there regularly engaged in using heliox for dives less than 150' ?

I used Heliox 50 when I test dived my IDA-59 in max. 60ft.
The only "good" reason why I used that gas was that it was easier
to fill. In that occasion, we had O2 and He in our gas bank, but all
N2-based gases came from the compressor. And it's irritating to use
a big compressor with EANx/Tx stick to fill IDA's 1-litre cylinder. The
diluent cylinder is full even before the gas mixing is settled. So it was
relatively easy to whip O2+He into the cylinder without even touching
the compressor. (Of course I could have used an EANx bank, lazy me..).

Anyway, no diving benefit, just filling (still have to think about O2
cleanliness!).

27th September 2007, 08:09	#3 (permalink)
matti_anttila New Member Current Rebreather/s: Other CCR Other SCR Other Rebreather/s: Other CCR Other SCR Join Date: Aug 2006 Location: Finland Posts: 16	Re: Shallow water heliox diving Quote: (Originally Posted by cstmwrks) Has anyone out there regularly engaged in using heliox for dives less than 150' ? I used Heliox 50 when I test dived my IDA-59 in max. 60ft. The only "good" reason why I used that gas was that it was easier to fill. In that occasion, we had O2 and He in our gas bank, but all N2-based gases came from the compressor. And it's irritating to use a big compressor with EANx/Tx stick to fill IDA's 1-litre cylinder. The diluent cylinder is full even before the gas mixing is settled. So it was relatively easy to whip O2+He into the cylinder without even touching the compressor. (Of course I could have used an EANx bank, lazy me..). Anyway, no diving benefit, just filling (still have to think about O2 cleanliness!).
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